Disabled: Use CSS-in-JS

[sarayourfriend]

Description

This PR updates the Disabled component to use CSS-in-JS similar to how newer components do like the AnglePickerControl and Text.

How has this been tested?

I've compared the before and after in storybook and there are neither visual nor behavior differences between the this and what currently exists.

Screenshots

Before:

After:

Types of changes

Non-breaking changes. The classnames are preserved so consumers are still able to target and pass classnames to the styled element.

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR.

[ItsJonQ]

🚀 from me!! Thank you @saramarcondes